CN1559176A - Environmental protection type base fibre film, and its mfg. process - Google Patents
Environmental protection type base fibre film, and its mfg. process Download PDFInfo
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- CN1559176A CN1559176A CNA2004100229483A CN200410022948A CN1559176A CN 1559176 A CN1559176 A CN 1559176A CN A2004100229483 A CNA2004100229483 A CN A2004100229483A CN 200410022948 A CN200410022948 A CN 200410022948A CN 1559176 A CN1559176 A CN 1559176A
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- mulch film
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- film
- fiber crops
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- 239000000835 fiber Substances 0.000 title claims abstract description 76
- 230000007613 environmental effect Effects 0.000 title abstract description 3
- 238000000034 method Methods 0.000 title description 8
- 230000008569 process Effects 0.000 title description 4
- 230000001070 adhesive effect Effects 0.000 claims abstract description 19
- 239000000853 adhesive Substances 0.000 claims abstract description 18
- 238000009960 carding Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 238000005097 cold rolling Methods 0.000 claims abstract description 6
- 239000002362 mulch Substances 0.000 claims description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000001035 drying Methods 0.000 claims description 22
- 230000002940 repellent Effects 0.000 claims description 21
- 239000005871 repellent Substances 0.000 claims description 21
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000004078 waterproofing Methods 0.000 claims description 12
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 10
- 229920000642 polymer Polymers 0.000 claims description 10
- 240000008564 Boehmeria nivea Species 0.000 claims description 9
- 239000000839 emulsion Substances 0.000 claims description 8
- 239000004816 latex Substances 0.000 claims description 8
- 229920000126 latex Polymers 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 8
- 239000011118 polyvinyl acetate Substances 0.000 claims description 8
- 125000002091 cationic group Chemical group 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 230000002209 hydrophobic effect Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 9
- 239000002689 soil Substances 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 5
- 229920002472 Starch Polymers 0.000 description 4
- 230000009172 bursting Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000003204 osmotic effect Effects 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 235000019698 starch Nutrition 0.000 description 4
- 239000008107 starch Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 229920006243 acrylic copolymer Polymers 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- -1 hydrone infiltrates Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000010871 livestock manure Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000005518 polymer electrolyte Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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- Protection Of Plants (AREA)
Abstract
An environmental protection type bast fibre film which is air permeable and impervious is prepared from bast fibres through opening fibres, removing dust and impurities, carding, stripping for netting, airflow netting, chemical sticking by adhesive to become film, applying the hydrophobic agent onto its surfaces, and cold rolling.
Description
Technical field
The present invention relates to agricultural mulching and manufacturing process thereof, particularly relate to can degrade fully, pollution-free, ultra-thin, high-intensity numb mulch film and manufacturing process thereof.
Background technology
The application of plastic film as a kind of modern agricultural technology to increasing crop yield, increasing peasant income, promote that the development function of agricultural production is very big, but the plastic film non-degradable has brought " white pollution " and has made soil compaction, the permeability variation, degradation problem under the soil fertility.For this reason, over nearly 20 years, carried out extensive studies both at home and abroad, attempt to seek a kind of environment-friendly type degradable mulch film of alternative plastic film, also developed a lot of novel mulch film products, mainly contain: starch addition type degradable agricultural mulching, the light degradation agricultural mulching, plant fiber mulch etc.In the starch addition type degradable agricultural mulching of exploitation, contents of starch has only about 20% at present, be starch decomposition wherein at the most under microbial action, and residual polyolefin film still exists with a kind of loose structure form; Light degradation agricultural mulching situation is similar.These two kinds of mulch films still are plastics and chemical fibre because of the primary raw material that adopts, and all can not eliminate " white pollution " problem in the farmland fully.Plant fiber mulch mainly is the paper mulch film, the domestic paper delivery mulch film of having developed, but because of the cost height, cracky does not also have extensive use.Japan has worked out a series of paper mulch film products, and extensive use in Japanese agriculture is produced.The major product type has: economical rationality type paper mulch film, fleece type paper mulch film, organic manure type paper mulch film, biochemical type paper mulch film and chemical polymer electrolyte paper mulch film, these mulch films have insulation, soil moisture conservation, the characteristics such as crops, good permeability of not burning, characteristics such as also having of having is pest-resistant, diseases prevention, inhibition weed growth and fertilizing soil help crop growth, and effect of increasing production is good.Simultaneously, the paper mulch film can be the environment-friendly type mulch film by decomposition, pollution-free fully in soil.But paper ground film-strength is low, wind resistance rain ability, easily broken, is torn easily during the film of shop, is not suitable for machinery shop film.In actual the use, shop film difficulty is big, takes a lot of work, and cost is higher.
Summary of the invention
The present invention seeks in order to overcome the defective that above-mentioned several novel agricultural mulch film exists, it is good to make full use of flaxen fiber fineness, the uniformity, tensile stretch, the characteristics that intensity is big, adopt the nonwoven process technology, with the flaxen fiber is raw material, producing a kind of is the environment-friendly type fiber crops mulch film product of skeleton with the flaxen fiber net, and its manufacturing process is provided.Numb mulch film degradable of the present invention, pollution-free helps preserving the ecological environment; Have the characteristics ultra-thin, that intensity is big, and good insulation, preserve moisture, permeability; Production cost is lower.
Realize that the technical scheme that the object of the invention adopts is:
The flaxen fiber net is formed numb mulch film with synthetic resinoid type adhesive is bonding, apply the watertight composition of one deck permeable watertight on the film surface again.
The flaxen fiber that product of the present invention is selected for use is preferably the ramie short fiber.
The flaxen fiber net that product of the present invention adopts is that flaxen fiber once becomes net through minute comb stripping fiber crops earlier, again the fleece that becomes net to form through the air lay secondary.
The synthetic resinoid type adhesive that product of the present invention is selected for use is a polyvinyl acetate emulsion type latex, or acrylic copolymer, preferentially selects polyvinyl acetate emulsion type latex for use.
The watertight composition that product film of the present invention surface applies is an Organic fluoride high molecular polymer water repellent film.
The manufacturing process of environment-friendly type fiber crops mulch film of the present invention is: through mixing shredding, flaxen fiber after the dedusting removal of impurities carries out a combing through carding machine earlier, the stripping fiber crops become net, carry out secondary through random web-laying equipment again and become net, the flaxen fiber net that forms after secondary becomes net carries out chemical adhesion, the fixed film forming of drying with synthetic resinoid type adhesive, numb mulch film surface after fixed applies water repellent carries out surface waterproofing and handles and drying, after cold-rolling mill carries out satinage, rolling, and qualified after testing can the use.
The present invention is when the fixed film forming of chemical adhesion, and adopting concentration is that 6～8% polyvinyl acetate emulsion type latex is made adhesive, control adhesive: water=1: 10～13,155～165 ℃ of drying temperatures, criteria thus the drying time 1.5～2.5 minutes.
The present invention adopts that the stoste pH value is 2～4, concentration is 3～5% cationic Organic fluoride high molecular polymer water repellent, control water repellent: water=1: 20,128～135 ℃ of drying temperatures, criteria thus the drying time 1.5～2.5 minutes when carrying out surface waterproofing and handle.
It is good that advantage of the present invention is that numb mulch film has made full use of flaxen fiber fineness, the uniformity, tensile stretch, the advantage that intensity is big, and preferentially adopt ramee, thereby made full use of China and accounted for the abundant ramie resource of the world more than 90%, the ramee of selecting for use can be the ramie long fibre, also can be the ramie short fiber, adopt ramie short fiber cost lower.The present invention takes the secondary distribution net-forming process when adopting nonwoven skeleton structure manufacturing fiber crops mulch film, promptly at first adopt dry method combing stripping fiber crops to become net to make the flaxen fiber net, flaxen fiber net to the dry method carding adopts air-flow to become net in a jumble for the second time, thereby the flaxen fiber net that has overcome the manufacturing of dry method carding is thicker, flaxen fiber problem pockety, make the numb mulch film of production more even, thinner, reach the purpose of making ultrathin numb mulch film, the numb mulch film grammes per square metre that adopts this a kind of unique technique measure manufacturing to produce is little, reaches 28～50g/m
2Film is thin, and thickness is 0.22～0.31mm; The intensity height, tensile strength reaches 175～1932N/m, and tearing resistance reaches 12～82N, and bursting strength reaches 23～200N.The chemical adhesive adhesive property height that adopts has compatibility preferably with flaxen fiber, and nontoxic, tasteless, easy degraded, compliance with environmental protection requirements; On film, apply the technology of waterproof ingredient after water repellent of selecting for use and the employing chemical adhesion film forming again, make the diameter of the hole of the waterproofing membrane layer that forms on the film surface behind the adding water repellent less than hydrone, but diameter greater than gas molecule, so can't seeing through waterproof membrane, hydrone infiltrates, and gas can pass through waterproof membrane in the soil, reach the purpose of " breathing freely ", the vertical osmotic coefficient of mulch film is 5.06 * 10
-4～1.76 * 10
-3Cm/s; Water repellent is in the film surface distributed, so consumption reduces the bulk density reduction of numb mulch film, the corresponding raising of insulation soil moisture conservation effect; The water repellent of selecting for use has the water of refusing effect at numb mulch film in effective life, can decompose voluntarily again through after the regular period, makes product of the present invention become the degradable on a kind of true meaning, free of contamination environment-friendly type fiber crops mulch film product.Environment-friendly type of the present invention fiber crops mulch film has broad application prospects, and replaces plastic film with numb mulch film the benign cycle that keeps China's ecosystem, protection environment, promotion agricultural sustainable development etc. are had more positive role.
Embodiment
Embodiment 1 makes environment-friendly type of the present invention fiber crops mulch film by following technological process: fibrilia raw material → open bag, mix shredding → combing → stripping of dedusting removal of impurities → carding machine become net → random web-laying equipment secondary become net → chemical adhesion fixed → water-proofing treatment → satinage, rolling → detection, put (following embodiment is identical) in storage.
Fibrilia raw material adopts the ramie short fiber, and fibre fineness is 3～9dtex, and fibre length is 3～12cm.Fibrilia raw material is sent into carding machine and is carried out a combing after mixing shredding and dedusting removal of impurities, the stripping fiber crops become net, the flaxen fiber net that utilizes carding technology to form, sending into random web-laying equipment again carries out secondary and becomes net, the flaxen fiber net (becoming the net width to reach 2.0～3.2 meters) that the flaxen fiber net that air lay forms carding technology carries out secondary distribution formation directly drops on the skin curtain conveyer belt after random web-laying equipment output, send into fixed operation, through the fixed film forming of chemical adhesion.Bonding fixed employing concentration is that 7% polyvinyl acetate emulsion type latex is made adhesive, adhesive: water=1: 12,160 ℃ of drying temperatures, criteria thus the drying time 2 minutes.Numb mulch film surface after fixed applies Organic fluoride high molecular polymer water repellent and carries out water-proofing treatment then, the Organic fluoride high molecular polymer water repellent stoste pH value that adopts is 2～4, cationic, concentration is 3～4%, water repellent: water=1: 20,130 ℃ of drying temperatures, criteria thus the drying time 2 minutes makes numb mulch film surface enclose the watertight composition of one deck permeable watertight.To send into cold-rolling mill through the numb mulch film of water-proofing treatment at last and carry out satinage, rolling, draught pressure is 0.60Mpa, and the roll shop building distance is 0.3mm.The technical indicator that the environment-friendly type fiber crops mulch film product that produces reaches after testing is: mass area ratio 42.66g/m
2, film thickness 0.22mm, tensile strength 1572N/m, tearing resistance 74.0N, bursting strength 174.8N, vertical osmotic coefficient 7.12 * 10
-4Cm/s.
Embodiment 2 fibrilia raw material adopt the ramie short fiber, and fibre fineness is 3～9dtex, and fibre length is 3～12cm.Fibrilia raw material is sent into carding machine and is carried out a combing after mixing shredding and dedusting removal of impurities, the stripping fiber crops become net, the flaxen fiber net that utilizes carding technology to form, sending into random web-laying equipment again carries out secondary and becomes net, the flaxen fiber net (becoming the net width to reach 2.0～3.2 meters) that the flaxen fiber net that air lay forms carding technology carries out secondary distribution formation directly drops on the skin curtain conveyer belt after random web-laying equipment output, send into fixed operation, through the fixed film forming of chemical adhesion.Bonding fixed employing concentration is that 6% polyvinyl acetate emulsion type latex is made adhesive, adhesive: water=1: 13,155 ℃ of drying temperatures, criteria thus the drying time 1.5 minutes.Numb mulch film surface after fixed applies Organic fluoride high molecular polymer water repellent and carries out water-proofing treatment then, the Organic fluoride high molecular polymer water repellent stoste pH value that adopts is 2～4, cationic, concentration is 5%, water repellent: water=1: 20,128 ℃ of drying temperatures, criteria thus the drying time 1.5 minutes makes numb mulch film surface enclose the watertight composition of one deck permeable watertight.To send into cold-rolling mill through the numb mulch film of water-proofing treatment at last and carry out satinage, rolling, draught pressure is 0.60Mpa, and the roll shop building distance is 0.25mm.The technical indicator that the environment-friendly type fiber crops mulch film product that produces reaches after testing is: mass area ratio 28.28g/m
2, film thickness 0.308mm, tensile strength 174.5N/m, tearing resistance 12.1N, bursting strength 23.2N, vertical osmotic coefficient 1.76 * 10
-3Cm/s.
Embodiment 3 fibrilia raw material adopt the ramie short fiber, and fibre fineness is 3～9dtex, and fibre length is 3～12cm.Fibrilia raw material is sent into carding machine and is carried out a combing after mixing shredding and dedusting removal of impurities, the stripping fiber crops become net, the flaxen fiber net that utilizes carding technology to form, sending into random web-laying equipment again carries out secondary and becomes net, the flaxen fiber net (becoming the net width to reach 2.0～3.2 meters) that the flaxen fiber net that air lay forms carding technology carries out secondary distribution formation directly drops on the skin curtain conveyer belt after random web-laying equipment output, send into fixed operation, through the fixed film forming of chemical adhesion.Bonding fixed employing concentration is that 8% polyvinyl acetate emulsion type latex is made adhesive, adhesive: water=1: 10,165 ℃ of drying temperatures, criteria thus the drying time 2.5 minutes.Numb mulch film surface after fixed applies Organic fluoride high molecular polymer water repellent and carries out water-proofing treatment then, the Organic fluoride high molecular polymer water repellent stoste pH value that adopts is 2～4, cationic, concentration 4～5%, water repellent: water=1: 20,135 ℃ of drying temperatures, criteria thus the drying time 2.5 minutes makes numb mulch film surface enclose the watertight composition of one deck permeable watertight.To send into cold-rolling mill through the numb mulch film of water-proofing treatment at last and carry out satinage, rolling, draught pressure is 0.60Mpa, and the roll shop building distance is 0.4mm.The technical indicator that the environment-friendly type fiber crops mulch film product that produces reaches after testing is: mass area ratio 50.47g/m
2, film thickness 0.239mm, tensile strength 1932N/m, tearing resistance 81.5N, bursting strength 203.0N, vertical osmotic coefficient 5.06 * 10
-4Cm/s.
Claims (8)
1. an environment-friendly type fiber crops mulch film is characterized in that it is the synthetic bonding film that forms of resinoid type adhesive of flaxen fiber net, and the film surface also has the watertight composition of one deck permeable watertight.
2. environment-friendly type fiber crops mulch film according to claim 1 is characterized in that described flaxen fiber is the ramie short fiber.
3. environment-friendly type fiber crops mulch film according to claim 1 is characterized in that described flaxen fiber net is that flaxen fiber once becomes net through minute comb stripping fiber crops earlier, again the fleece that becomes net to form through the air lay secondary.
4. according to the described environment-friendly type fiber crops of claim 1,2 or 3 mulch film, it is characterized in that described synthetic resinoid type adhesive is a polyvinyl acetate emulsion type latex.
5. according to the described environment-friendly type fiber crops of claim 1,2 or 3 mulch film, it is characterized in that described watertight composition is an Organic fluoride high molecular polymer water repellent film.
6. the manufacturing process of the described environment-friendly type of claim 1 fiber crops mulch film, comprise flaxen fiber mixing shredding, the dedusting removal of impurities, the mulch film of making carries out satinage with cold-rolling mill at last, it is characterized in that flaxen fiber carries out a combing through carding machine earlier, the stripping fiber crops become net, carry out secondary through random web-laying equipment again and become net, the flaxen fiber net that becomes net to form through secondary carries out the fixed film forming of chemical adhesion with synthetic resinoid type adhesive, and the numb mulch film surface after fixed applies water repellent and carries out the surface waterproofing processing.
7. the manufacturing process of environment-friendly type fiber crops mulch film according to claim 6, it is characterized in that it is that 6～8% polyvinyl acetate emulsion type latex is made adhesive that bonding fixed film forming adopts concentration, control adhesive: water=1: 10～13,155～165 ℃ of drying temperatures, criteria thus the drying time 1.5～2.5 minutes.
8. the manufacturing process of environment-friendly type fiber crops mulch film according to claim 6, it is characterized in that surface waterproofing handle to adopt that the stoste pH value is 2～4, concentration is 3～5% cationic Organic fluoride high molecular polymer water repellent, control water repellent: water=1: 20,128～135 ℃ of drying temperatures, criteria thus the drying time 1.5～2.5 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100229483A CN1311733C (en) | 2004-03-03 | 2004-03-03 | Environmental protection type base fibre film, and its mfg. process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100229483A CN1311733C (en) | 2004-03-03 | 2004-03-03 | Environmental protection type base fibre film, and its mfg. process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1559176A true CN1559176A (en) | 2005-01-05 |
| CN1311733C CN1311733C (en) | 2007-04-25 |
Family
ID=34441030
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100229483A Expired - Lifetime CN1311733C (en) | 2004-03-03 | 2004-03-03 | Environmental protection type base fibre film, and its mfg. process |
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|---|---|
| CN (1) | CN1311733C (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100567624C (en) * | 2007-12-29 | 2009-12-09 | 中国农业科学院麻类研究所 | The preparation facilities of environment-friendly type fiber crops mulch film |
| CN101987660A (en) * | 2009-07-30 | 2011-03-23 | 中国商用飞机有限责任公司 | Heat and sound insulation block and manufacturing method thereof |
| CN102428852A (en) * | 2011-09-01 | 2012-05-02 | 中国农业科学院麻类研究所 | Degradable agricultural natural insect-repelling mulching film and preparation method thereof |
| CN102560891A (en) * | 2011-12-19 | 2012-07-11 | 安吉振兴布业有限公司 | Method for preparing degradable hemp agricultural mulching material |
| CN102668934A (en) * | 2011-03-15 | 2012-09-19 | 漳州仂元工业有限公司 | Organic mulching film manufactured by fibers of plant shell or branch and stem |
| CN103070045A (en) * | 2013-02-01 | 2013-05-01 | 中国农业科学院麻类研究所 | Rice seedling machine seedling planting diaphragm and manufacture method of rice seedling machine seedling planting diaphragm |
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| CN101987660A (en) * | 2009-07-30 | 2011-03-23 | 中国商用飞机有限责任公司 | Heat and sound insulation block and manufacturing method thereof |
| CN102668934A (en) * | 2011-03-15 | 2012-09-19 | 漳州仂元工业有限公司 | Organic mulching film manufactured by fibers of plant shell or branch and stem |
| CN102428852A (en) * | 2011-09-01 | 2012-05-02 | 中国农业科学院麻类研究所 | Degradable agricultural natural insect-repelling mulching film and preparation method thereof |
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| CN103306051A (en) * | 2012-03-06 | 2013-09-18 | 安吉振兴布业有限公司 | Thin jute fiber non-woven fabric for packaging and production method for thin jute fiber non-woven fabric |
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| CN103070045B (en) * | 2013-02-01 | 2015-04-08 | 中国农业科学院麻类研究所 | Rice seedling machine seedling planting diaphragm and manufacture method of rice seedling machine seedling planting diaphragm |
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